<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-03 -034 09:20:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="18.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 95% PACIFIC flags: Multiple candidates for F2x cusp</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.03 (034) 09:20:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202603402030920009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.700" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.271" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="25.187" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="2.750" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="2.750" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="8.200" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="245.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="245.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="7.100" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="315.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="1.416" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="2.750" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="2.750" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="279.077" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="222.512" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="4.941" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="81.047" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="13.968" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="44.838" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="69.750" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.450" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="100">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 245.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 250.000 255.000 255.000 255.000 255.000 255.000 255.000 255.000 256.667 258.333 260.000 260.000 262.500 265.000 265.000 265.000 265.000 265.000 270.000 270.000 270.000 270.000 275.000 275.000 276.250 277.500 278.750 280.000 280.000 285.000 285.000 285.000 290.000 290.000 290.000 295.000 295.000 295.000 300.000 300.000 300.000 305.000 305.000 310.000 310.000 315.000 315.000 325.000 325.000 330.000 334.103 339.093 345.294 353.206 363.653 378.083 399.312 433.624 498.505
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
63 69 69 72 75 78 81 81 81 84 84 84 84 81 81 78 78 78 72 66 66 66 0 0 57 60 60 0 66 0 0 0 0 0 0 0 0 0 0 0 0 57 69 0 0 0 0 0 0 0 0 60 66 0 69 0 0 0 0 69 0 0 0 66 69 0 0 0 66 66 60 66 69 60 66 69 60 66 69 66 72 72 69 72 69 69 72 69 66 69 69 69 66 66 69 0 60 51 54 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 1.171875 1.171875 -0.390625 1.171875 1.171875 1.171875 1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="162">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.974 90.0 95.0 100.0 105.0 110.0 115.0 120.0 121.896 125.0 130.0 133.792 135.0 140.0 145.0 145.688 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 279.077 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.202 0.946 1.227 1.371 1.416 1.39 1.311 1.265 1.265 1.265 1.265 1.28 1.344 1.407 1.416 1.594 1.78 1.958 2.135 2.316 2.505 2.703 2.916 3.147 3.4 3.682 4.0 4.36 4.768 5.214 5.671 6.099 6.471 6.779 7.029 7.229 7.386 7.508 7.597 7.658 7.692 7.7 7.7 7.687 7.658 7.612 7.553 7.48 7.395 7.3 7.195 7.082 6.962 6.836 6.704 6.569 6.429 6.287 6.143 5.998 5.852 5.705 5.559 5.413 5.268 5.124 4.982 4.841 4.703 4.566 4.432 4.301 4.172 4.046 3.922 3.801 3.683 3.568 3.456 3.347 3.24 3.137 3.036 2.938 2.843 2.75 2.66 2.573 2.489 2.407 2.327 2.25 2.176 2.103 2.033 1.965 1.899 1.836 1.774 1.715 1.657 1.601 1.547 1.495 1.444 1.396 1.348 1.303 1.258 1.216 1.174 1.135 1.096 1.059 1.023 0.988 0.954 0.922 0.89 0.86 0.831 0.802 0.775 0.749 0.723 0.698 0.674 0.651 0.629 0.608 0.587 0.567 0.547 0.529 0.511 0.493 0.476 0.46 0.444 0.429 0.414 0.4 0.387 0.373 0.361 0.348 0.336 0.325 0.314 0.303 0.293 0.283 0.273 0.264 0.255 0.246 0.237 0.229 0.221 0.214 0.207

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="1.416" PeakHeight="110.0" Num="3" Error="0.0">
-27.919 9.63 -1.737
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="1.416" EndFrequency="7.7" PeakHeight="279.077" Num="5" zHalfNm="222.512" Error="2.747">
-133.172 5.92 -12.59 7.424 -0.971
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="35.688" Depth="0.151"/>
<TopsideChapman PeakHeight="279.077" PeakDensity="735607.94" PeakScaleHeight="44.838" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
